
Doctor Hugo Hackenbush, Tony, and Stuffy try and save Judy's sanitarium by winning a big race with a finicky horse owned by Judy's boyfriend Gil. There are a few problems. Hackenbush, who was recently put in charge of the sanitarium, isn't really a doctor, he's a veterinarian.
Cast

Groucho Marx
Dr. Hugo Z. Hackenbush

Chico Marx
Tony

Harpo Marx
Stuffy

Allan Jones
Gil Stewart

Maureen O'Sullivan
Judy Standish

Margaret Dumont
Emily Upjohn

Sig Ruman
Dr. Leopold X. Steinberg

Leonard Ceeley
Whitmore

Douglass Dumbrille
Morgan

Esther Muir
'Flo' Marlowe

Robert Middlemass
Sheriff

Vivien Fay
Specialty Dancer

Ivie Anderson
Specialty Singer

Gino Corrado
Man Boarding Bus (uncredited)

Bess Flowers
Racetrack Spectator (uncredited)
Bert Moorhouse
Racetrack Spectator (uncredited)

Frank O'Connor
Racetrack Guard (uncredited)

Carole Landis
Party Guest (uncredited)

Etta Moten
Black Singer (uncredited)

Dorothy Dandridge
Singer (uncredited)

Byron Foulger
Racetrack Spectator (uncredited)
Crew

Sam Wood
Director, Producer
Robert Pirosh
Screenplay, Story

George Seaton
Screenplay, Story
George Oppenheimer
Screenplay
Frank E. Hull
Editor

Joseph Ruttenberg
Director of Photography
Leonard Smith
Director of Photography
Robert A. Golden
Assistant Director

Irving Thalberg
Producer
Lawrence Weingarten
Producer
Dolly Tree
Wardrobe Designer

Edwin B. Willis
Art Department Assistant

Douglas Shearer
Sound Director

Franz Waxman
Original Music Composer

Bronislau Kaper
Songs
Walter Jurmann
Songs
Gus Kahn
Lyricist

Cedric Gibbons
Art Direction
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